Press.



H. K. KOUYOUMJIAN;

PRESS. APPLICATION FILED 11111.29, 191'0.

' Patented Mar. 11,1913.

3 SHEETS-SHEET 1.

INVENTOR Hfiiou'rluw K. Kcuroumml Wrrrvmssns H. K. KOUYOUMJlAN.

PRESS.

APPLICATION FILED JAN. 29, 1910.

1,055 ,544, Patented Mar. 11,1913.

3 SHEETS-SHEET 2.

w/ TNE ssas IN YEN 'ro/a Hneou T/UN K. KOUYOL/MJ/fiNv H. K. KOUYDUMJIAN.

PRESS. APPLICATION FILED JAN. 29, 1910.

1,055,544. Patented Mar.11,1913.

3 SHEBTS-SHEET 3.

IN V5 N WOQ Wmvassas f BY UTIUN K.

SAS Al PRESS.

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Specification of Letters Patent.

Patented Mari 11, 1913.

Application filed January 29, 1910. Serial No. 540,820.

To aZZ whom it may concern:

Be it known that I, Hnnoormn K. Kon- YOUMJIAN, a citizen of the United States, residing at St. Louis, Missouri, have invented a certain new and useful Im rovement in Presses, of which the following is a full, clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, forming part of this specification, in which- Figure 1 is a side elevational View, partly in section, of my improved press. Fig; 1 is a similar view showing the parts in their changed positions. Fig. 2 is a front elevational view. Fig. 3 is a diagrammatic view of the electric circuit.

This invention relates to a new and useful improvement in presses.

In the drawings I have shown my improvement as applied to a clothes pressing machine, in which there is an iron capable of being subjected to variable pressures, but it obvious that in lieu of an iron, a cutting die could be employed for cutting out various material, such as leather, for parts of shoes, cloth, cotton goods, linens, and other parts entering into manufactured articles.

The object of my present invention is to construct a press in such manner that the variable pressure is exerted by an electromagnct under control of the operator, the main lever cooperating with ov-erbalancing weights in such manner that it may move to place the iron, die, etc, into and out of operative position, independently ofthe influence of said magnet.

In the accompanying drawings, -1 indicates a supporting frame having standards 2, between which standards is pivoted a main lever 3 upon a shaft 4.

5 is an arm swingingly mounted up0n a vertical pivot in the upper end of arm 3, said arm carrying a telescoping member 6, upon the outer end of which is the iron, die, or the like, 7

8 is the work table on which the cloth is placed to be ironed, cut, etc.

The lower end of lever 3 extends forwardly and carries an armature disk 9, in which is arranged a magnetizing. hlgh resistance coil 0.. I

11 is an electromagnet secured in position within the frame 1, and which, when energized, attracts the armature 9 and operates. the main lever.

12 is a bracket extension on the forwardly extending foot of the main lever 3, said bracket extension having a foot lever 13 mounted in-its lower end, the forward end of which foot lever is provided with a treadle on which the operator may place his foot. An adjustable rubber bufier 1 1 limits the upwardmovement of the foot lever. A link 15 is connected to the rear end of the foot lever and to a box 16 constituting a weight, said box being upon the end of a lever 17 which is mounted upon a fulcrum rod or shaft 18.

Box 16 is preferably filled with shot, so that its weight may be varied. Primarily, weight 16 serves as an overbalance for the lever 13, lifting the forward end of said lever, as shown in Fig. l. Secondarily, weight 16 cooperates with a weight 19 in the form of a box containing shotand both together overbalance the main lever 3.

Weight- 19 is preferably immediately under weight. 16 and provided with a rubber buffer ring 20. Weight '19 is pivotally supported upon the shaft .18, and is provided with a frame extension in which is mounted a roller 21, said rolier bearing upon the rear face of the bracket 12. Weight 19 tends to move the roller 21 in the direction of the arrow against the bracket 12, and this movement lifts the foot of the main lever and tends to raise the loci 7.

lVhen the parts are in the position shown in Fig. l, the tool 7 elevated, and when the operator depresses the forward end of,

lever 13, the first action is to swing the main lever 3, and the bracket 12 rearwardly, thus raising the weights 19 and 16. Further pressure of the foot lever 13 causes the weight 16 to leave the weight 19, which movement nctuates the rheostat and cuts in the current. The tool end of the main lever, with weight 16 removed, overbalances weight 19. When the operator removes his foot. from the lever 13 and permits weight 16 to descend, it will engage weight 19 and the combined weights l6 and 19 will overbalance the tool end of the main lever and raise said tool end.

When the operator raises weight 16 to permit the tool end of the main lever to descend, lever 17 causes the shaft 18, to which desired pressure.

it is fixed, to rock, and a rod 22 on said shaft has its forward end depressed beneath a weight 23 on the lower end of a. rod 24:.

cluded, and said magnet is incrementally energized. There is slight lost motion between the rod- 24 and the rheostat arm 26.

The extent of movement of the rheo-stat arm is directly under'oontrol of the operator through the foot lever 13, hence the operator can apply as little or as much pressure on the tool 7 as desired. I have found that four thousand pounds is sufficient pressure to apply to the tool 7 for ordinary purposes, but it is obvious that this pressure can be increased by making the magnet 11 more powerful. The rheo-stat arm 26 is provided with a weight 28,-which will return said rheostat arm so as-to cut in rc-' sistance when the forward end of the foot lever is raised. Weight 28 is, of course, overbalanced by weight 23 when the foot le-- ver is depresse r 29 is a stop lever, having its inner end in the path of movement of the rheostat arm 26. and its other end extending through a slot in. the frame 1, where it is provided with a milled nut 30 by which it may be locked in adjusted positions. By adjusting this lever 29, the rheostat arm may be arrested at any desired point so that the maxi- .mum limit of pressure may be predetermined. For instance, if magnet 11 is suf- I ficiently powerful to exert four thousand pounds pressure on the tool 7, and it is desired to exert not more than two thousand pounds pressure on said tool, then the lever 29 would be adjusted in the proper position to arrest the rheostat arm when sufficient resistance is cut out of the circuit to energize the magnet 11 the proper amount. Thus, it is not necessary for the operator to hold the foot lever 13 stationary to maintain two thousand pounds pressure on the tool 7. The operator can depress the forward end of the foot lever to the full limit, but the arrest of the rheostat arm will not permit the magnet 11 to be energized by more than the'necessary amount of current to give the Magnet 11 becomes magnetically saturated, and its action in releasing the armature is tardy. To overcome this saturation so that magnet 11 will-let go instantly, I arrange a high resistanoe'coil a in the armature 9, which, when energized, repels the core of magnet 11; and not only neutralizes toaster.

resistance coil a is in circuit when the rheostat resistance cuts out the coil Z) of the main magnet. When, however, the rheostat arm 26 cuts. down the resistance, the current will flow into coil Z), because there is less resistance in said coil Z) than in coil (1. Thus, as the arm cuts down the resistance to the current flowing in coil 72, the current by the high resistance in coil a is automatically cut out of said coil at. There is an ordinary hand-switch v0 in the circuit whose purpose is well understood.

As shown in Fig. 1 the weight 16 is raised above the weight 19. Weight 19 is partially arrested in its upward movement when the tool 7 contacts with the material to be operated upon, and the continued movement of the weight 16 in an upward direction causes the rheostat. arm to operate, thus the operator has control of the rheostat arm independently of any movement of the main lever. When the operator raises his footto release the foot lever, the firstaction is to cause the weight 16 to strike the weight 19, and a jar is imparted to the armature 9 which causes the magnet 11 to lose its magnetic saturation, and provides for a quick separation of the armature and magnet.

I do not in this application claim the electrical features disclosed, as the same form the subject-matter of a separate application.

I claim:

1. In a machine of the character described, the combination of a main lever having a toolat one end, a plurality of weights for moving said lever in one direc tion, and means or moving one of said weights whereby said lever moves in the other direction.

2. In a machine of the character described, the combination of a main lover, a plurality of weights for overbalancing the same, means for operating one of said weights to unbalance said main lever, and a controlling device operated by said means for exerting pressure upon said main lever when it is unbalanced.

3. Ina machine of the character described, the combination of a main lever,

a plurality of independently controlled 4. In a machine of the character, described, the combination of a main lever,

overbalancing weights for the same, means for exerting variable pressure on said lever for moving the same in opposition to said overbalanclng weights, and manually operable means connected to one of said overbalancing weights for varying the pressure in said pressure-exerting means.

5; In a machine of thecharacter described, the combination of a main lever, weights for overbalancing the same, means for exerting variable pressure on said main lever in opposition to said weights, and manually operable means for relieving the main lever of one of said overbalancing weights and at the same time increasing the opposing pressure.

6. In a machine of the character described, the combination of a main lever, a plurality of weights for overbalancing the same, said weights being variable, andmeans for moving one of said weights whereby the main lever is actuated.

7. In a machine of the character described, the combination of a main lever having a tool at one end, a plurality of weights for moving said lever inone direction, said weights being in the form of cups whereby variable quantities of material may be introduced therein, and means for moving one of said weights whereby the main lever moves in the opposite direction.

8. In a machine of thecharacter described, the combination of a main lever, a plurality of weights for overbalancing the same, means for operating one of said weights to actuate said main lever, and a controlling device operated by said means for exercising a variable pressure upon said main lever when it is actuated;

9. In a machine of the character described, the combination of a main lever, a weight for exerting pressure thereon, means for exerting a variable pressure-upon said main lever, a supplemental weight,-

which, in certain positions, assists in overbalancmg said mam lever, manually operable means connected to said supplemental weight for initially actuating the main lever, and means operable by said manually operable mea'ns for controlling the variation of pressure upon the main lever by saidpressure exerting means.

In testimony whereof I hereunto affix my signature in the presence of two witnesses, this 27th day of January, 1910.

HAROUTIUN K. KOUYOUMJLIN. 

